TDG
TransDigm Group Incorporated$1137.79-20.57 (-1.78%)Prev Close$1158.36·MCap$71.98B·P/E37.26·Vol101.1K·Yield0.07%
▲
Buys (12M)
3
$3.84M
▼
Sells (12M)
51
$771.09M
◆
Net Activity
Net Seller
$767.25M
●
Active Insiders
12
last 12 mo
Over the past 12 months, insider activity at TransDigm Group Incorporated (TDG) has been dominated by selling, with 3 insider purchases totaling $3.84M and 51 insider sales totaling $771.09M. The most recent insider transaction was by Howley W Nicholas (director), who sold $12.74M worth of shares on Apr 21, 2026. TransDigm Group Incorporated operates in the Industrials sector, within the Aerospace & Defense industry, with a market cap of $71.98B.
TDG Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 21, 2026 | Howley W Nicholas | director | Sell | 10,072 | $1265.09 | $12.74M | 30,585 |
| Apr 16, 2026 | Reiss Joel | officer: Co-Chief Operating Officer | Sell | 3,900 | $1280.46 | $4.99M | 7,267-35% |
| Mar 19, 2026 | Howley W Nicholas | director | Sell | 10,132 | $1213.05 | $12.29M | 31,478 |
| Mar 17, 2026 | Reiss Joel | officer: Co-Chief Operating Officer | Sell | 3,900 | $1243.70 | $4.85M | 7,480-34% |
| Feb 27, 2026 | SMALL ROBERT J | director | Buy | 1 | $1285.00 | $1.3K | 366,142 |
| Feb 20, 2026 | Howley W Nicholas | director | Sell | 10,168 | $1307.68 | $13.30M | 30,796 |
| Feb 18, 2026 | Howley W Nicholas | Director | Sell | 10,168 | $1307.68 | $13.30M | 0 |
| Feb 18, 2026 | Reiss Joel | officer: Co-Chief Operating Officer | Sell | 3,640 | $1294.28 | $4.71M | 7,473-33% |
| Feb 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,900 | $1293.88 | $5.05M | 0 |
| Feb 9, 2026 | Lisman Michael | director, officer: President & CEO | Buy | 950 | $1284.26 | $1.22M | 3,259+41% |
| Feb 3, 2026 | Stein Kevin M | Director | Sell | 94,518 | $1427.75 | $134.95M | 55,900-63% |
| Feb 3, 2026 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 290 | $1430.10 | $414.7K | 0 |
| Jan 16, 2026 | Reiss Joel | officer: Co-Chief Operating Officer | Sell | 7,800 | $1429.92 | $11.15M | 7,456-51% |
| Jan 16, 2026 | Stein Kevin M | Director | Sell | 15,254 | $1406.38 | $21.45M | 13,644-53% |
| Jan 9, 2026 | Stein Kevin M | Director | Sell | 34,406 | $1407.19 | $48.42M | 19,147-64% |
| Jan 6, 2026 | Stein Kevin M | Director | Sell | 49,420 | $1373.73 | $67.89M | 32,418-60% |
| Jan 5, 2026 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 290 | $1329.03 | $385.4K | 0 |
| Dec 16, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,900 | $1290.52 | $5.03M | 0 |
| Dec 11, 2025 | SMALL ROBERT J | Director | Sell | 4,700 | $1290.19 | $6.06M | 0 |
| Dec 9, 2025 | SMALL ROBERT J | Director | Sell | 90,953 | $1335.72 | $121.49M | 0 |
| Dec 5, 2025 | Stein Kevin M | Director | Sell | 17,526 | $1362.28 | $23.88M | 0 |
| Dec 2, 2025 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 290 | $1351.06 | $391.8K | 0 |
| Dec 1, 2025 | Stein Kevin M | Director | Sell | 4,592 | $1360.73 | $6.25M | 0 |
| Nov 26, 2025 | Stein Kevin M | Director | Sell | 4,217 | $1360.57 | $5.74M | 0 |
| Nov 24, 2025 | Stein Kevin M | Director | Sell | 230 | $1360.31 | $312.9K | 0 |
| Nov 21, 2025 | Stein Kevin M | Director | Sell | 1,104 | $1360.89 | $1.50M | 0 |
| Nov 19, 2025 | Stein Kevin M | Director | Sell | 7,191 | $1361.57 | $9.79M | 0 |
| Nov 18, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,900 | $1340.00 | $5.23M | 0 |
| Nov 17, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1334.92 | $3.65M | 0 |
| Nov 17, 2025 | Lisman Michael | President & CEO | Buy | 1,954 | $1339.14 | $2.62M | 0 |
| Nov 4, 2025 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 290 | $1310.00 | $379.9K | 0 |
| Oct 28, 2025 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 580 | $1354.76 | $785.8K | 0 |
| Oct 28, 2025 | Stein Kevin M | Director | Sell | 700 | $1360.00 | $952.0K | 0 |
| Oct 21, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1279.59 | $3.84M | 0 |
| Oct 15, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1298.87 | $3.55M | 0 |
| Sep 24, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1276.07 | $3.83M | 0 |
| Sep 16, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1282.47 | $3.51M | 0 |
| Sep 16, 2025 | SMALL ROBERT J | Director | Sell | 5,000 | $1276.98 | $6.38M | 0 |
| Aug 27, 2025 | Graff Michael | Director | Sell | 1,760 | $1402.10 | $2.47M | 0 |
| Aug 20, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1406.07 | $4.22M | 0 |
| Aug 18, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1397.22 | $3.82M | 0 |
| Jul 22, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1597.86 | $4.79M | 0 |
| Jul 15, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1569.86 | $4.30M | 0 |
| Jun 20, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1424.27 | $4.27M | 0 |
| Jun 18, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1444.09 | $3.95M | 0 |
| Jun 13, 2025 | Wynne Sarah | Chief Financial Officer | Sell | 1,800 | $1450.00 | $2.61M | 0 |
| Jun 12, 2025 | SMALL ROBERT J | Director | Sell | 45,700 | $1425.01 | $65.12M | 0 |
| Jun 12, 2025 | Wynne Sarah | Chief Financial Officer | Sell | 3,200 | $1452.14 | $4.65M | 0 |
| May 20, 2025 | HENNESSY SEAN P | Director | Sell | 4,700 | $1436.52 | $6.75M | 0 |
| May 20, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1434.35 | $4.30M | 0 |
Showing 1–50 of 202
1 / 5
TDG Insider Buying Activity
The following table shows recent insider purchases of TransDigm Group Incorporated (TDG) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Feb 27, 2026 | SMALL ROBERT J | director | Buy | 1 | $1285.00 | $1.3K | 366,142 |
| Feb 9, 2026 | Lisman Michael | director, officer: President & CEO | Buy | 950 | $1284.26 | $1.22M | 3,259+41% |
| Nov 17, 2025 | Lisman Michael | President & CEO | Buy | 1,954 | $1339.14 | $2.62M | 0 |
TDG Insider Selling Activity
The following table shows recent insider sales of TransDigm Group Incorporated (TDG) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 21, 2026 | Howley W Nicholas | director | Sell | 10,072 | $1265.09 | $12.74M | 30,585 |
| Apr 16, 2026 | Reiss Joel | officer: Co-Chief Operating Officer | Sell | 3,900 | $1280.46 | $4.99M | 7,267-35% |
| Mar 19, 2026 | Howley W Nicholas | director | Sell | 10,132 | $1213.05 | $12.29M | 31,478 |
| Mar 17, 2026 | Reiss Joel | officer: Co-Chief Operating Officer | Sell | 3,900 | $1243.70 | $4.85M | 7,480-34% |
| Feb 20, 2026 | Howley W Nicholas | director | Sell | 10,168 | $1307.68 | $13.30M | 30,796 |
| Feb 18, 2026 | Howley W Nicholas | Director | Sell | 10,168 | $1307.68 | $13.30M | 0 |
| Feb 18, 2026 | Reiss Joel | officer: Co-Chief Operating Officer | Sell | 3,640 | $1294.28 | $4.71M | 7,473-33% |
| Feb 17, 2026 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,900 | $1293.88 | $5.05M | 0 |
| Feb 3, 2026 | Stein Kevin M | Director | Sell | 94,518 | $1427.75 | $134.95M | 55,900-63% |
| Feb 3, 2026 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 290 | $1430.10 | $414.7K | 0 |
| Jan 16, 2026 | Reiss Joel | officer: Co-Chief Operating Officer | Sell | 7,800 | $1429.92 | $11.15M | 7,456-51% |
| Jan 16, 2026 | Stein Kevin M | Director | Sell | 15,254 | $1406.38 | $21.45M | 13,644-53% |
| Jan 9, 2026 | Stein Kevin M | Director | Sell | 34,406 | $1407.19 | $48.42M | 19,147-64% |
| Jan 6, 2026 | Stein Kevin M | Director | Sell | 49,420 | $1373.73 | $67.89M | 32,418-60% |
| Jan 5, 2026 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 290 | $1329.03 | $385.4K | 0 |
| Dec 16, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,900 | $1290.52 | $5.03M | 0 |
| Dec 11, 2025 | SMALL ROBERT J | Director | Sell | 4,700 | $1290.19 | $6.06M | 0 |
| Dec 9, 2025 | SMALL ROBERT J | Director | Sell | 90,953 | $1335.72 | $121.49M | 0 |
| Dec 5, 2025 | Stein Kevin M | Director | Sell | 17,526 | $1362.28 | $23.88M | 0 |
| Dec 2, 2025 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 290 | $1351.06 | $391.8K | 0 |
| Dec 1, 2025 | Stein Kevin M | Director | Sell | 4,592 | $1360.73 | $6.25M | 0 |
| Nov 26, 2025 | Stein Kevin M | Director | Sell | 4,217 | $1360.57 | $5.74M | 0 |
| Nov 24, 2025 | Stein Kevin M | Director | Sell | 230 | $1360.31 | $312.9K | 0 |
| Nov 21, 2025 | Stein Kevin M | Director | Sell | 1,104 | $1360.89 | $1.50M | 0 |
| Nov 19, 2025 | Stein Kevin M | Director | Sell | 7,191 | $1361.57 | $9.79M | 0 |
| Nov 18, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,900 | $1340.00 | $5.23M | 0 |
| Nov 17, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1334.92 | $3.65M | 0 |
| Nov 4, 2025 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 290 | $1310.00 | $379.9K | 0 |
| Oct 28, 2025 | Murphy Patrick Joseph | Co-Chief Operating Officer | Sell | 580 | $1354.76 | $785.8K | 0 |
| Oct 28, 2025 | Stein Kevin M | Director | Sell | 700 | $1360.00 | $952.0K | 0 |
| Oct 21, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1279.59 | $3.84M | 0 |
| Oct 15, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1298.87 | $3.55M | 0 |
| Sep 24, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1276.07 | $3.83M | 0 |
| Sep 16, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1282.47 | $3.51M | 0 |
| Sep 16, 2025 | SMALL ROBERT J | Director | Sell | 5,000 | $1276.98 | $6.38M | 0 |
| Aug 27, 2025 | Graff Michael | Director | Sell | 1,760 | $1402.10 | $2.47M | 0 |
| Aug 20, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1406.07 | $4.22M | 0 |
| Aug 18, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1397.22 | $3.82M | 0 |
| Jul 22, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1597.86 | $4.79M | 0 |
| Jul 15, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1569.86 | $4.30M | 0 |
| Jun 20, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1424.27 | $4.27M | 0 |
| Jun 18, 2025 | Howley W Nicholas | Director | Sell | 2,736 | $1444.09 | $3.95M | 0 |
| Jun 13, 2025 | Wynne Sarah | Chief Financial Officer | Sell | 1,800 | $1450.00 | $2.61M | 0 |
| Jun 12, 2025 | SMALL ROBERT J | Director | Sell | 45,700 | $1425.01 | $65.12M | 0 |
| Jun 12, 2025 | Wynne Sarah | Chief Financial Officer | Sell | 3,200 | $1452.14 | $4.65M | 0 |
| May 20, 2025 | HENNESSY SEAN P | Director | Sell | 4,700 | $1436.52 | $6.75M | 0 |
| May 20, 2025 | Reiss Joel | Co-Chief Operating Officer | Sell | 3,000 | $1434.35 | $4.30M | 0 |
TDG Insiders
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